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Fencer Vulns
medium 6.5

CVE-2023-37204 json

A website could have obscured the fullscreen notification by using an option element by introducing lag via an expensive computational func…

published 2023-07-05 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-41124

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits
0
none known

Summary

A website could have obscured the fullscreen notification by using an option element by introducing lag via an expensive computational function. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 115.

Patch / fix

  • Mozilla Firefox 115
  • firefox Ubuntu 20.04 LTS 115.0+build2-0ubuntu0.20.04.3

ubuntu advisories UBUNTU-CVE-2023-37204

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • MozillaFirefox-branding-SLE SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +11 more 115-150200.9.13.1
  • MozillaFirefox SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +11 more 115.0-150200.152.93.1
  • MozillaFirefox-branding-SLE SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +5 more 115-35.12.2
  • MozillaFirefox SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +6 more 115.0-112.165.1
  • MozillaFirefox-branding-SLE SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS 115-150000.4.25.1
  • MozillaFirefox SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLE High Performance Computing 15 SP1-LTSS 115.0-150000.150.91.1

suse advisories SUSE-SU-2023:2886-1SUSE-SU-2023:2850-1SUSE-SU-2023:2849-1

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 115.0-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:13037-1

  • firefox-esr Alpine 3.23, Alpine 3.22, Alpine 3.21 +3 more 115.0-r0

alpine advisories ALPINE-CVE-2023-37204

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected products

  • Mozilla Firefox

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.